Hydraulic toy.



E. ARNOLD.

HYDRAULIC TOY.

APPucATloN FILED APR.4,1915.

l,299897., Patented Apr. 8,1919.4

.Er/2st Ariza/d; awww en time.

ERNST ARNOLD, 0F READING, PENNSYLVANIA.

HYDRAULIC TOY.

To ZZ 'LU/tom, 'it may concern.'

Be it known that I, ERNST ARNOLD, a citizen of the United States, residing at Reading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Hydraulic Toys, of which the following is a specification.

My invention relates to toys adapted to be educative as well as amusing; and it consists in combining a fountain basin and jetpipe with liquid-pressure and air-pressure chambers, so as to produce an attractive and interestingly puzzling device involving well-known scientiic principles in its automatic operation; as fully described in connection with the accompanying drawing, and clearly defined in the claim.

The drawing is a sectional elevation show ing my improved device as preferably constructed. v

The construction indicated is very light and economical, involving the use of sheet metal and piping mainly or exclusively; the casing a being of tubular form, with suitably ared top and bottom portions b and c, and having lower spaced-apart partitions d and e tightly secured therein to form a bottom air-pressure chamber f, and an upper partition g, and dished cover-plate h also tightly secured and arranged to form between them a closed water-reservoir lr: extending around and below the fountainbasin m formed by the dished cover-plate. A vertical pipe n rigidly connects the basin m to the air-pressure chamber f, passing tightly through the partitions g and c to ,paratus near the bottom of the chamber f, and serving to conduct the liquid from basin 'mj to said chamber as controlled by a plug-valve p or the like. The said pipe n is coiled as shown to retard the gravitation of water from the basin m to the chamber f, and in that way prolong the operation of the ap- Another pipe o rigidly connects the air-pressure chamber f with the reservoir 70,' extending from the top of chamber f. into a screw-capped lling-and-emptying opening s of the reservoir as indicated, and serving to conduct compressed air from the top of chamber f to the top of reservoir 7c.

The jet-pipe t is centrally secured to the dished cover-plate h, with its open lower end depending into the reservoir 7c; the partition g which forms the bottom ofthe latter Specification of Letters Patent.

Patented Apres, raie.

Application filed April 4, 1916. Serial No. 88,767.

being depressed at its center as indicated so that the last remaining liquid in the reservoir will be forced into the jet-pipe. The nozzle u may be changed so as to vary the size and height of the fountain jet therefrom in order that the descending water from the jet will operate a miniature waterwheel suitably mounted upon the basin as indicated.

When the basin m and reservoir 7c are filled with water or other liquid and the screw-cap tightly closed, it will be readily seen that upon removal of the plug-valve p the liquid will iow from the basin into the lower chamber f, and cause a iiow of compressed air through pipe 'I' into reservoir 7c whereby the liquid in the latter will be forced through the jet-pipe t as determined by the head of liquid in the basin and the supply in the reservoir. As the j et discharges into the basin the head is substantially maintained; and the reservoir being in close contact with the basin there is only a minimum variation in the height of the jet produced. This action is automatically continued until the entire supply of liquid in the reservoir has been discharged, which may require an hour or longer as determined. In order to renew the operation the filled lower chamber must be emptied and the reservoir refilled, both of which are eiected through the single capped opening e shown, though separate means may be provided for emptying the lower chamber if desired. While the operation is simple it is interestingly puzzling to the juvenile mind and the device is stimulatively educative as well as pleasing and amusing. The construction specifically described may be readily modified in detail without departing materially from the invention.

What I claim is:

A hydraulic toy comprising a casing, a chamber in the lower portion of the casing, a chamber in the upper portion of the casing, the inner wall of the latter chamber forining a basin and said chamber having in the upper wall a screw-capped illing and emptying opening and also having a central depression in its bottom wall, a discharge nozzle communicating at its lower end with the interior of said depression and extending upwardly through the basin wall, a conduit leading upwardly from the upper portion of the lower chamber and having its eduction tlf) orifice disposed in the screw-capped filling opening of the upper chamber, a pipe leading downwardly from the bottom of the basin to the lower kportion of the lower chamber and having a coiled intermediate portion adapted to retard the passage of y water from the basin to the lower chamber,

and movable means for closing the induction orifice of said pipe to retain water in the basin until it is desired to bring about 10 an operation of the toy.

In testimony whereof` I ax my signature.

ERNST ARNOLD? Copies of this patent may be obtained for ve cents each, by addressing che Commissioner of Patents, Washington, D. C. 

